A.H2SO4aq的精选

问题详情：下列热化学方程式中△H的含义表示正确的是（   ）A．H2SO4(aq)＋Ba(OH)2(aq)====BaSO4(s)＋2H2O(l)；    △H（中和热）B．1/2H2SO4(浓)＋NaOH(aq)====1/2Na2SO4(aq)＋H2O(l)；△H（中和热）C．H2(g)＋1/2O2(g)====H2O(g)；△H（燃烧热）D．CH4...